Phyto-assisted synthesis of CuO/industrial waste derived biochar composite for adsorptive removal of doxycycline hydrochloride and recycling of spent biochar as green energy storage device

Susmita Kar; Shoroshi Dey; Kushal Banik Chowdhury; Sudip Kumar Ghosh; Jayanta Mukhopadhyay; Sunil Kumar; Sourja Ghosh; Swachchha Majumdar

doi:10.1016/j.envres.2023.116824

Phyto-assisted synthesis of CuO/industrial waste derived biochar composite for adsorptive removal of doxycycline hydrochloride and recycling of spent biochar as green energy storage device

Environ Res. 2023 Nov 1;236(Pt 2):116824. doi: 10.1016/j.envres.2023.116824. Epub 2023 Aug 5.

Authors

Susmita Kar¹, Shoroshi Dey², Kushal Banik Chowdhury³, Sudip Kumar Ghosh⁴, Jayanta Mukhopadhyay², Sunil Kumar⁵, Sourja Ghosh⁶, Swachchha Majumdar⁷

Affiliations

¹ Membrane and Separation Technology Division, CSIR- Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata, 700032, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
² Energy Materials and Device Division, CSIR-Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata, 700032, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
³ Socio-Economic Research Unit, Indian Statistical Institute (North-East Centre), Tezpur, Assam 784501, India.
⁴ Energy Materials and Device Division, CSIR-Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata, 700032, India.
⁵ Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; Waste Reprocessing Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, India.
⁶ Membrane and Separation Technology Division, CSIR- Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata, 700032, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India. Electronic address: sourja@cgcri.res.in.
⁷ Membrane and Separation Technology Division, CSIR- Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata, 700032, India.

PMID: 37549783
DOI: 10.1016/j.envres.2023.116824

Abstract

The highest exposure of Endocrine disrupting compounds (EDC) into the water bodies as a result of extensive production and application of Covid-19 related drugs is a growing concern now a days. Herein, a novel nanocomposite material was developed by impregnating green synthesized copper oxide nanoparticles on the porous surface of fabric waste derived biochar to eliminate the concerned EDCs along with a sustainable disposal strategy for the spent adsorbent. Morphological characterizations by Field emission scanning electron microscopy confirmed the formation of hierarchical porous structured material. X-ray analysis revealed presence of both amorphous nature of biochar matrix as well as the crystalline nature attributed from monodispersion of copper oxide nanoparticles onto biochar surface. Batch sorption study showed removal of doxycycline hydrochloride (DOX) of >97% after 2 h at pH 7, 30 mg L^-1 initial concentration of DOX and 2 g L^-1 of adsorbent dose at room temperature after a two-step optimization process. Spectroscopic study and Raman shift suggested that pore filling, strong complexation and electrostatic interactions maximise the adsorption of DOX in the CuO/biochar composite as compared to the pristine biochar. However disposal of spent adsorbent is a crucial aspect for the environment and therefore, a sustainable recycling strategy for DOX loaded adsorbent as electrode material has been proposed for the first time in this study. Maximum specific capacitance value was observed in the range of 221.9-297.3 F g^-1 for the DOX loaded nanocomposite at 1 mV s^-1 comparable with other reported heteroatom-doped carbonaceous material as electrode. Therefore the excellent adsorption capacity of green synthesized CuO/biochar composite and its recycling after DOX adsorption can be recommended as a sustainable solution for mitigation of pharmaceuticals from wastewater. A detail study on degradation of DOX into eco-friendly products and its cost-effectiveness would be beneficial to suggest appropriate mitigation strategy for such compounds.

Keywords: CuO/Industrial waste derived biochar nanocomposite; Doxycycline adsorption; Full factorial design; Green energy storage device; Pharmaceutical component; Spent biochar utilization.